src/msw/statbr95.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/statbr95.cpp
   3 // Purpose:     native implementation of wxStatusBar
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     04.04.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "statbr95.h"
  14 #endif
  15
  16 // for compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20   #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24   #include "wx/setup.h"
  25   #include "wx/frame.h"
  26   #include "wx/settings.h"
  27   #include "wx/dcclient.h"
  28 #endif
  29
  30 #ifdef __WIN95__
  31
  32 #include "wx/log.h"
  33
  34 #include "wx/generic/statusbr.h"
  35 #include "wx/msw/statbr95.h"
  36
  37 #include  <windows.h>
  38 #include  <windowsx.h>
  39
  40 #if !defined(__GNUWIN32__)
  41 #include  <commctrl.h>
  42 #endif
  43
  44 #if     wxUSE_NATIVE_STATUSBAR
  45
  46 #if     !USE_SHARED_LIBRARY
  47   IMPLEMENT_DYNAMIC_CLASS(wxStatusBar95, wxStatusBar);
  48
  49   BEGIN_EVENT_TABLE(wxStatusBar95, wxStatusBar)
  50     EVT_PAINT(wxWindow::OnPaint)
  51     EVT_SIZE(wxStatusBar95::OnSize)
  52   END_EVENT_TABLE()
  53 #endif  //USE_SHARED_LIBRARY
  54
  55
  56 // ----------------------------------------------------------------------------
  57 // macros
  58 // ----------------------------------------------------------------------------
  59
  60 // windowsx.h and commctrl.h don't define those, so we do it here
  61 #define StatusBar_SetParts(h, n, w) SendMessage(h, SB_SETPARTS, (WPARAM)n, (LPARAM)w)
  62 #define StatusBar_SetText(h, n, t)  SendMessage(h, SB_SETTEXT, (WPARAM)n, (LPARAM)(LPCSTR)t)
  63 #define StatusBar_GetTextLen(h, n)  LOWORD(SendMessage(h, SB_GETTEXTLENGTH, (WPARAM)n, 0))
  64 #define StatusBar_GetText(h, n, s)  LOWORD(SendMessage(h, SB_GETTEXT, (WPARAM)n, (LPARAM)(LPSTR)s))
  65
  66 #define hwnd      ((HWND)m_hWnd)
  67
  68 // ============================================================================
  69 // implementation
  70 // ============================================================================
  71
  72 // ----------------------------------------------------------------------------
  73 // wxStatusBar95 class
  74 // ----------------------------------------------------------------------------
  75
  76 wxStatusBar95::wxStatusBar95()
  77 {
  78   SetParent(NULL);
  79   m_hWnd = 0;
  80   m_windowId = 0;
  81 }
  82
  83 wxStatusBar95::wxStatusBar95(wxWindow *parent, wxWindowID id, long style)
  84 {
  85   Create(parent, id, style);
  86 }
  87
  88 bool wxStatusBar95::Create(wxWindow *parent, wxWindowID id, long style)
  89 {
  90   SetParent(parent);
  91
  92   if (id == -1)
  93     m_windowId = NewControlId();
  94   else
  95     m_windowId = id;
  96
  97   DWORD wstyle = WS_CHILD | WS_VISIBLE;
  98   if ( style & wxST_SIZEGRIP )
  99     wstyle |= SBARS_SIZEGRIP;
 100
 101   m_hWnd = (WXHWND)CreateStatusWindow(wstyle,
 102                                       "",
 103                                       (HWND)parent->GetHWND(),
 104                                       m_windowId);
 105   if ( m_hWnd == 0 ) {
 106     wxLogSysError("can't create status bar window");
 107     return FALSE;
 108   }
 109
 110   // this doesn't work: display problems (white 1-2 pixel borders...)
 111   //  SubclassWin(m_hWnd);
 112
 113   return TRUE;
 114 }
 115
 116 void wxStatusBar95::CopyFieldsWidth(const int widths[])
 117 {
 118   if (widths && !m_statusWidths)
 119     m_statusWidths = new int[m_nFields];
 120
 121   if ( widths != NULL ) {
 122     for ( int i = 0; i < m_nFields; i++ )
 123       m_statusWidths[i] = widths[i];
 124   }
 125   else {
 126     delete [] m_statusWidths;
 127     m_statusWidths = NULL;
 128   }
 129 }
 130
 131 void wxStatusBar95::SetFieldsCount(int nFields, const int widths[])
 132 {
 133   wxASSERT( (nFields > 0) && (nFields < 255) );
 134
 135   m_nFields = nFields;
 136
 137   CopyFieldsWidth(widths);
 138   SetFieldsWidth();
 139 }
 140
 141 void wxStatusBar95::SetStatusWidths(int n, const int widths[])
 142 {
 143   // @@ I don't understand what this function is for...
 144   wxASSERT( n == m_nFields );
 145
 146   CopyFieldsWidth(widths);
 147   SetFieldsWidth();
 148 }
 149
 150 void wxStatusBar95::SetFieldsWidth()
 151 {
 152   int *pWidths = new int[m_nFields];
 153
 154   int nWindowWidth, y;
 155   GetClientSize(&nWindowWidth, &y);
 156
 157   if ( m_statusWidths == NULL ) {
 158     // default: all fields have the same width
 159     int nWidth = nWindowWidth / m_nFields;
 160     for ( int i = 0; i < m_nFields; i++ )
 161       pWidths[i] = (i + 1) * nWidth;
 162   }
 163   else {
 164     // -1 doesn't mean the same thing for wxWindows and Win32, recalc
 165     int nTotalWidth = 0,
 166         nVarCount = 0,
 167         i;
 168     for ( i = 0; i < m_nFields; i++ ) {
 169       if ( m_statusWidths[i] == -1 )
 170         nVarCount++;
 171       else
 172         nTotalWidth += m_statusWidths[i];
 173     }
 174
 175     if ( nVarCount == 0 ) {
 176       // wrong! at least one field must be of variable width
 177       wxFAIL;
 178
 179       nVarCount++;
 180     }
 181
 182     int nVarWidth = (nWindowWidth - nTotalWidth) / nVarCount;
 183
 184     // do fill the array
 185     int nCurPos = 0;
 186     for ( i = 0; i < m_nFields; i++ ) {
 187       if ( m_statusWidths[i] == -1 )
 188         nCurPos += nVarWidth;
 189       else
 190         nCurPos += m_statusWidths[i];
 191       pWidths[i] = nCurPos;
 192     }
 193   }
 194
 195   if ( !StatusBar_SetParts(hwnd, m_nFields, pWidths) ) {
 196     wxLogDebug("StatusBar_SetParts failed.");
 197   }
 198
 199   delete [] pWidths;
 200 }
 201
 202 void wxStatusBar95::SetStatusText(const wxString& strText, int nField)
 203 {
 204   if ( !StatusBar_SetText(hwnd, nField, strText) ) {
 205     wxLogDebug("StatusBar_SetText failed");
 206   }
 207 }
 208
 209 wxString wxStatusBar95::GetStatusText(int nField) const
 210 {
 211   wxASSERT( (nField > -1) && (nField < m_nFields) );
 212
 213   wxString str("");
 214   int len = StatusBar_GetTextLen(hwnd, nField);
 215   if (len > 0)
 216   {
 217         StatusBar_GetText(hwnd, nField, str.GetWriteBuf(len));
 218         str.UngetWriteBuf();
 219   }
 220   return str;
 221 }
 222
 223 void wxStatusBar95::OnSize(wxSizeEvent& event)
 224 {
 225   FORWARD_WM_SIZE(hwnd, SIZE_RESTORED, event.GetSize().x, event.GetSize().y,
 226                   SendMessage);
 227
 228   // adjust fields widths to the new size
 229   SetFieldsWidth();
 230 }
 231
 232 #endif
 233   // __WIN95__
 234 #endif
 235   // wxUSE_NATIVE_STATUSBAR